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Date:      Tue, 12 Nov 2002 16:47:04 -0800
From:      Nathan Kinkade <nkinkade@dsl-only.net>
To:        freebsd-questions@freebsd.org
Subject:   Re: advice on fine tuning diskless boot
Message-ID:  <20021113004704.GV72253@sub21-156.member.dsl-only.net>
In-Reply-To: <1037146648.3dd19a183ee31@mail.webvolution.net>
References:  <1037146648.3dd19a183ee31@mail.webvolution.net>

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On Wed, Nov 13, 2002 at 12:17:28AM +0000, Joao Pedras wrote:
> 
> Hello all!
> 
> Two small issues...
> 
> 1) After sucessfully configuring a set of systems which come up diskless (thank
> you for the fine documentation), these still try to mount root from /dev/ad0s1a:
> 
> ..
> ..
> Adjusted interface xl0
> Mounting root from ufs:/dev/ad0s1a
> no such device 'ad'
> setrootbyname failed
> ffs_mountroot: can't find rootvp
> Root mount failed: 6
> Mounting root from nfs:
> NFS ROOT: 192.168.200.3:/diskless_root
> NFS SWAP: 192.168.200.3:/diskless_swap
> ..
> ..
> 
> After this the system comes up fine.
> 
> The kernel is compiled without ata and friends. Should a kernel option like
> ROOTDEVNAME be used ?
> 
> I checked the 'loader' and 'pxeboot' documentation, the mailing lists and it is
> not obvious how to "fix" this.
> 
> 2. do you see any inconvenient in totally removing all UFS options from the
> kernel ? These systems have no hard drives...
> 
> That's all for now. Thank you for time.
> 
> Joao

I am not an expert on this, but a few weeks ago I had a diskless system
up and running.  I removed all traces of UFS and ATA support from the
kernel and it seemed to work fine.  I removed all of the following
options, as well as any ATA devices:
options         FFS 
options         FFS_ROOT 
options         SOFTUPDATES 
options         UFS_DIRHASH

Good luck,
Nathan





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